| Title: | Smartphone-Based VOC Sensor Using Colorimetric Polydiacetylenes |
| Author(s): | Park DH; Heo JM; Jeong W; Yoo YH; Park BJ; Kim JM; |
| Address: | "Department of Computer Software, Kwangwoon University , Seoul 01897, Korea. Department of Chemical Engineering, Kyung Hee University , Yongin 17104, Korea" |
| Journal Title: | ACS Appl Mater Interfaces |
| ISSN/ISBN: | 1944-8252 (Electronic) 1944-8244 (Linking) |
| Abstract: | "Owing to a unique colorimetric (typically blue-to-red) feature upon environmental stimulation, polydiacetylenes (PDAs) have been actively employed in chemosensor systems. We developed a highly accurate and simple volatile organic compound (VOC) sensor system that can be operated using a conventional smartphone. The procedure begins with forming an array of four different PDAs on conventional paper using inkjet printing of four corresponding diacetylenes followed by photopolymerization. A database of color changes (i.e., red and hue values) is then constructed on the basis of different solvatochromic responses of the 4 PDAs to 11 organic solvents. Exposure of the PDA array to an unknown solvent promotes color changes, which are imaged using a smartphone camera and analyzed using the app. A comparison of the color changes to the database promoted by the 11 solvents enables the smartphone app to identify the unknown solvent with 100% accuracy. Additionally, it was demonstrated that the PDA array sensor was sufficiently sensitive to accurately detect the 11 VOC gases" |
| Keywords: | VOC sensor conjugated polymer polydiacetylene smartphone-based detection solvatochromism; |
| Notes: | "PubMed-not-MEDLINEPark, Dong-Hoon Heo, Jung-Moo Jeong, Woomin Yoo, Young Hyuk Park, Bum Jun Kim, Jong-Man eng 2018/01/18 ACS Appl Mater Interfaces. 2018 Feb 7; 10(5):5014-5021. doi: 10.1021/acsami.7b18121. Epub 2018 Jan 25" |
